Fan, Rui
Wei, Lixin
Sun, Hao
Hu, Ziyu
Funding for this research was provided by:
Natural Science Foundation of Hebei (F2016203249)
Hebei Youth Fund (E2018203162)
National Natural Science Foundation of China (61803327)
Article History
Received: 27 April 2019
Accepted: 3 December 2019
First Online: 14 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest to this work. We declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted. The work is original research that has not been published previously, and not under consideration for publication elsewhere, in whole or in part. The manuscript is approved by all authors for publication.